
 #content #contentRight{
    margin: 0 auto;
    width:80%;
    height: 100%;
    z-index: 4;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
}
#content #contentRight .preStudent{
    width: 40%;
    height: 40%;
    background-color: white;
    box-shadow: 3px 3px 3px #ccc;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
#content #contentRight .studying{
    width: 40%;
    height: 40%;
    background-color: white;
    box-shadow: 3px 3px 3px #ccc;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
#content #contentRight p{
    font-size: 22px;
}
#content #contentRight .preStudent div{
    color: #2563dc;
    margin-top: 10px;
    cursor: pointer;
}
#content #contentRight .studying div{
    color: #2563dc;
    margin-top: 10px;
    cursor: pointer;
}
#menu .childmenu{
    text-align: center;
}